body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f0f0f0;
            background-image: url('img/background.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: white;
        }

        .container {
            max-width: 600px;
            margin: 50px auto;
            padding: 20px;
            background: rgba(0, 0, 0, 0.4);
            border-radius: 8px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .logo {
            max-width: 100%;
            height: auto;
        }

        .survey-section {
            display: none;
            width: 100%;
        }

        .survey-section.active {
            display: block;
        }

        .question {
            margin: 20px 0;
        }

        button {
            margin: 5px 0;
            padding: 10px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            width: 100%;
            transition: background-color 0.3s;
            background-color: #666;
            color: white;
        }

        button.selected {
            background-color: #003eb6;
            color: white;
        }

        button:hover {
            opacity: 0.8;
        }

        .next-btn, .prev-btn, .send-btn {
            width: auto;
            padding: 10px 15px;
        }

        .next-btn {
            background-color: #4CAF50;
            color: white;
        }

        .prev-btn {
            background-color: #f44336;
            color: white;
        }

        .send-btn {
            background-color: #2196F3;
            color: white;
        }

        .button-container {
            display: flex;
            justify-content: space-between;
            margin-top: 20px;
        }

        .hidden {
            display: none;
        }

        select {
            width: 100%;
            padding: 10px;
            margin: 5px 0;
            border: none;
            border-radius: 5px;
            background-color: #fff;
            color: #000;
            font-size: 16px;
            cursor: pointer;
        }

        #other-party-input {
            width: 100%;
            padding: 10px;
            margin-top: 10px;
            border: none;
            border-radius: 5px;
            background-color: #fff;
            color: #000;
            font-size: 16px;
        }

        #contactForm {
            display: flex;
            flex-direction: column;
            width: 100%;
        }

        #contactForm input, 
        #contactForm textarea {
            margin: 5px 0;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 12px;
        }

        .thank-you-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            margin-top: 50px;
        }

        .thank-you-title {
            font-size: 48px;
            font-weight: bold;
        }

        .thank-you-description {
            font-size: 18px;
            margin-bottom: 10px;
            text-align: center;
        }

        .thank-you-link {
            font-size: 20px;
            font-weight: bold;
            color: #89BFFF;
            text-decoration: none;
            display: block;
            margin-bottom: 20px;
        }

        .whatsapp-float {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 60px;
            height: 60px;
            background-color: #25D366;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease-in-out;
        }

        .whatsapp-float img {
            width: 40px;
            height: 40px;
        }

        .whatsapp-float:hover {
            transform: scale(1.1);
        }

        @media (max-width: 600px) {
            .container {
                padding: 10px;
            }
            button {
                padding: 8px;
            }
        }